package chat.user.servlet;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import chat.user.domain.User;

/**
 * Servlet Filter implementation class LoginFilter
 */
@WebFilter(
		urlPatterns = { 
				"/view/main.jsp", 
				"/view/user/*", 
				"/view/online/*",
				"/view/chatroom/*"
		}, 
		servletNames = { 
				"OnlineServlet", 
				"UserEditServlet",
				"DescServlet",
				"InfoServlet"
		})
public class LoginFilter implements Filter {

   
	public void destroy() {
		// TODO Auto-generated method stub
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest httpRequest = (HttpServletRequest)request;
		HttpServletResponse httpResponse = (HttpServletResponse)response;
		User user = (User)httpRequest.getSession().getAttribute("session_user");
		
		if(user==null)
		{
			
			httpResponse.sendRedirect("/chat/view/login.jsp");
		}
		else
		{
			chain.doFilter(request, response);
		}
		
	}

	
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
